Junior high school mathematics is not difficult, and it is generally a basic problem. You just need to listen carefully in class, especially when the teacher tells examples of each knowledge point, and review what the teacher says in time after class. More importantly, it is useless to do more questions. Only by doing the questions can we really understand the knowledge points. Do more questions, and you will understand all the knowledge points. Naturally, you will think that mathematics is not as difficult as we thought.